Quantitative interpretation of images of long-nosed potoroos at baited camera-traps: defining a 'visit'

2019 ◽  
Vol 41 (1) ◽  
pp. 147
Author(s):  
Peter Jarman ◽  
Michael Driessen

We devised a way to distinguish separate visits by animals to a camera station. The probability that an image of a long-nosed potoroo (Potorous tridactylus) would occur declined with time since the last potoroo image, reaching an asymptote after 5min at a level that may represent the probability of initiation of new visits.


2014 ◽  
Vol 36 (1) ◽  
pp. 128 ◽  
Author(s):  
Karl Vernes ◽  
Peter Jarman

Truffles represent an important food resource for many small mammals, but because most mycophagous mammals are difficult to observe in the wild, behavioural observations of mammals handling and consuming truffles are almost non-existent. Using camera traps, we observed the behaviour of long-nosed potoroos (Potorous tridactylus) foraging for buried truffles, and recorded the rate at which truffles were excavated and consumed. Potoroos excavated buried truffles rapidly (2.4 ± 0.2 s) with synchronous drawing strokes of their forepaws, then gathered the excavated truffles with forepaws and/or mouth and cleaned away adherent debris before consuming the truffle. When potoroos were unsuccessful at recovering a truffle, they spent significantly more time digging (4.8 ± 0.6 s) before giving up. Potoroos were successful at recovering a truffle in 76% of digging attempts, and once they had located a cache of buried truffles, achieved a rate of recovery of ~2.4 truffles per minute.



2016 ◽  
Vol 38 (1) ◽  
pp. 12 ◽  
Author(s):  
Andrew W. Claridge ◽  
David J. Paull ◽  
Ross B. Cunningham

We tested whether an artificial food additive, truffle oil, improved detection of mycophagous mammals when added to a standard bait type of peanut butter and rolled oats used with camera traps. Sixteen mammalian taxa were subsequently recorded, the most common being antechinus, bush rat (Rattus fuscipes), swamp wallaby (Wallabia bicolor) and long-nosed bandicoot (Perameles nasuta) as well as the long-nosed potoroo (Potorous tridactylus) and southern brown bandicoot (Isoodon obesulus). The only species for which detection rate was improved by the addition of truffle oil to standard bait was the ringtail possum (Pseudocheirus peregrinus), a species that has never been recorded eating fungi. In contrast, the total number of detections of all species at any given site was significantly higher, on average, using standard bait without truffle oil, as was the average number of detections of the partially mycophagous bush rat. Time to first detection of bush rats and swamp wallabies was significantly shorter using the standard bait type, compared with one with truffle oil added. Overall, the use of the truffle oil additive did not improve the chance or rate of detecting mycophagous mammals. To maximise the number of detections of mammals at camera traps the use of a standard bait type of peanut butter and rolled oats is recommended.



Author(s):  
Koustubh Sharma ◽  
Matthias Fiechter ◽  
Todd George ◽  
Juliette Young ◽  
Justine Shanti Alexander ◽  
...  


2014 ◽  
Vol 22 (6) ◽  
pp. 752
Author(s):  
Wu Hongpan ◽  
Chu Hongjun ◽  
Wang Yuan ◽  
Ma Jianwei ◽  
Ge Yan ◽  
...  




2020 ◽  
Vol 54 (29-30) ◽  
pp. 1813-1826
Author(s):  
Giovany A. González-Desales ◽  
Luis A. Tello-Sahagún ◽  
Cynthia P. Cadena-Ramírez ◽  
Marco A. López-Luna ◽  
Alejandra Buenrostro-Silva ◽  
...  
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